Pentacon lenses and homemade pinhole "lens"
(from left 1st line)... Homemade pinhole | Carl Zeiss Jena Flektogon MC 50 f/4
(from left 2nd line)... Carl Zeiss Jena Biometar 120 f/2,8 | Carl Zeiss Jena Sonnar MC 180/2,8
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